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How to add duplicate varchar values without displaying error in MySQL?
For this, let us see an example and first create a −
mysql> create table DemoTable1409 -> ( -> FirstName varchar(20), -> UNIQUE KEY UN_FirstName(FirstName) -> ); Query OK, 0 rows affected (0.79 sec)
Following is the query to add duplicate varchar −
mysql> alter table DemoTable1409 drop index UN_FirstName; Query OK, 0 rows affected (0.40 sec) Records: 0 Duplicates: 0 Warnings: 0
Insert some records in the table using insert −
mysql> insert into DemoTable1409 values('Chris');
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable1409 values('Chris');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable1409 values('David');
Query OK, 1 row affected (0.09 sec)Display all records from the table using select −
mysql> select * from DemoTable1409;
This will produce the following output −
+-----------+ | FirstName | +-----------+ | Chris | | Chris | | David | +-----------+ 3 rows in set (0.00 sec)
Updated on: 11-Nov-2019
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